Rookie crime beat reporter Evie Jones is haunted by the unsolved murder of her best friend in 1982. The suspected killer was never apprehended. Now twenty-two, Evie is obsessively drawn to finding the murderer. She leans on childhood friend David Patton for help – but why does every trail seem to lead back to David's father? As she gets closer to the truth, Evie becomes convinced that the killer is still at large — and that he's coming back for her. 'Take the wit of Gone Girl, the horror of Helter Skelter, the twists of In Cold Blood, and the wisdom of Joan Didion's The White Album, and you feel the thrill of reading The Devil You Know.' — Claire Cameron, author of The Bear 'A first novel rich with menace and psychological depth ... Elisabeth de Mariaffi delivers a thriller that thrills in so many ways.' — Andrew Pyper, author of The Demonologist